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 rectangular base rail end fitting stainless steel 60 degree 7 8 pipe  US $10.28
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 90 Degree Chrome Zamak 7 8 Rectangular Base US $6.50
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 60 Degree Chrome Zamak 7 8 Rectangular Base US $6.50
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 RAIL FITTING 7 8 INCH RECTANGULAR 90 DEGREE BASE CHROME US $6.99
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 RAIL FITTING 7 8 INCH RECTANGULAR 45 DEGREE BASE CHROME US $9.99
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 RAIL FITTING 7 8 INCH RECTANGULAR 30 DEGREE BASE CHROME US $11.99
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 Stansport Explorer Rectangular Sleeping Bag 40 degree US $35.00
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 Wenzel Tundra Minus 10 Degree Rectangular Hooded Sleeping Bag US $50.00
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 90 Degree Stainless Steel Rectangular Base US $12.95
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 WHITECAP 90 DEGREE RECTANGULAR BASE 7 8 PART S 1466C US $7.89
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 SEA BOWLD 90 Degree Chrome Zamak 7 8 Rectangular Base US $10.00
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 SEA DOG 281901 RAIL BASE 1 RECTANGULAR 90Degree 5598 US $16.69
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 Blue Rectangular Camping Hiking Sleeping Bag Explorer 40 degrees Stuff bag incl US $54.99
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What would happen to a light ray if it enters a rectangular shape at an angle other than 90 degrees?
Also, how would it exit the material with respect to the original incident ray?
Since the rectangular shape will have a greater refractive index than air (since the only substance with a smaller refractive index that air/other gases is a vacuum and only slightly smaller than air), when the light enters the rectangluar shape it well bend toward the normal (which is an imaginary line that goes through the edge of the object at the point the light hit, and at 90 degrees to the surface), and as it exits the shape it will bend back away from the normal, in fact parallel to the original incident ray.
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